INFINITI Q70 Turn Signal Bulb Size

The INFINITI Q70 rear turn signal uses a 7440 bulb size. The chart contains bulb size specifications for vehicles produced between 2014 and 2019.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Rear Turn Signal

Years	Bulb Size
2015-2019	7440
2014	7440NA

Description	Bulb Size
ANSI standard (US & Canada). Single-filament wedge bulb (T20). 12V, 21W.	7440
ANSI standard (US & Canada). Single-filament wedge bulb (T20), natural amber glass. 12V, 21W.	7440NA

The 7440 and 7440NA are the two bulb types specified for the rear turn signal of the INFINITI Q70, both belonging to the T20 wedge family under the ANSI standard applicable to the US and Canada.
Both bulb types operate at 12 volts and 21 watts, and both use a single-filament design, meaning each bulb serves one lighting function rather than sharing a filament with another circuit.
The T20 designation refers to the wedge base form factor, which uses the bulb's glass envelope pressed directly into the socket rather than a separate metal base with pins.
The 7440NA variant differs from the standard 7440 in that its glass envelope is tinted natural amber, which produces an amber-colored output without relying on a clear lens or external amber filter.
The INFINITI Q70 uses the 7440 for model years 2015-2019 in the rear turn signal position, while the 7440NA is specified for the 2014 model year.
Although the 7440 and 7440NA share identical electrical ratings and the same T20 wedge base, they are not interchangeable without consequence, as substituting a clear 7440 in place of a 7440NA would alter the color output at the lens.